When the hapless Sing and his dim-witted pal Bone try to scam the residents of Pig Sty Alley into thinking they're members of the dreaded Axe Gang, the real gangsters descend on this Shanghai slum to restore their fearsome reputation. What gang leader Brother Sum doesn't know is that three legendary retired kung fu masters live anonymously in this decrepit neighborhood and don't take kindly to interlopers.
